setup appraisal to test multiple rails versions

.gitignore

@@ -7,3 +7,4 @@ test/dummy/tmp/
 *.gem
 .rbenv-gemsets
 *.swp
+gemfiles/*.lock

.travis.yml

@@ -5,6 +5,11 @@ rvm:
   - 2.1
   - 2.2
   - 2.3.0
+gemfile:
+  - gemfiles/4.0.gemfile
+  - gemfiles/4.1.gemfile
+  - gemfiles/4.2.gemfile
+  - gemfiles/5.0.gemfile
 before_install:
   - gem install bundler --conservative --version '~> 1.10'
 before_script:

Appraisals

@@ -0,0 +1,19 @@
+appraise "4.0" do
+  gem "rails", "~> 4.0.0"
+  gemspec
+end
+
+appraise "4.1" do
+  gem "rails", "~> 4.1.0"
+  gemspec
+end
+
+appraise "4.2" do
+  gem "rails", "~> 4.2"
+  gemspec
+end
+
+appraise "5.0" do
+  gem "rails", "~> 5.0"
+  gemspec
+end

Gemfile.lock

@@ -30,6 +30,10 @@ GEM
       multi_json (~> 1.3)
       thread_safe (~> 0.1)
       tzinfo (~> 0.3.37)
+    appraisal (2.1.0)
+      bundler
+      rake
+      thor (>= 0.14.0)
     arel (4.0.2)
     builder (3.1.4)
     concurrent-ruby (1.0.2)
@@ -80,11 +84,12 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  appraisal
   bootstrap_form!
   jquery-rails
   mime-types (~> 2.6.2)
   mocha
-  rails (~> 4.0)
+  rails (>= 4.0)
   sqlite3
   timecop (~> 0.7.1)
 

bootstrap_form.gemspec

@@ -17,8 +17,9 @@ Gem::Specification.new do |s|
   s.test_files = Dir["test/**/*"]
 
   s.add_development_dependency "mime-types", "~> 2.6.2"
-  s.add_development_dependency "rails", "~> 4.0"
+  s.add_development_dependency "rails", ">= 4.0"
   s.add_development_dependency "sqlite3"
   s.add_development_dependency "timecop", "~> 0.7.1"
   s.add_development_dependency "mocha"
+  s.add_development_dependency "appraisal"
 end

gemfiles/4.0.gemfile

@@ -0,0 +1,8 @@
+# This file was generated by Appraisal
+
+source "http://rubygems.org"
+
+gem "jquery-rails"
+gem "rails", "~> 4.0.0"
+
+gemspec :path => "../"

gemfiles/4.1.gemfile

@@ -0,0 +1,8 @@
+# This file was generated by Appraisal
+
+source "http://rubygems.org"
+
+gem "jquery-rails"
+gem "rails", "~> 4.1.0"
+
+gemspec :path => "../"

gemfiles/4.2.gemfile

@@ -0,0 +1,8 @@
+# This file was generated by Appraisal
+
+source "http://rubygems.org"
+
+gem "jquery-rails"
+gem "rails", "~> 4.2"
+
+gemspec :path => "../"

gemfiles/5.0.gemfile

@@ -0,0 +1,8 @@
+# This file was generated by Appraisal
+
+source "http://rubygems.org"
+
+gem "jquery-rails"
+gem "rails", "~> 5.0"
+
+gemspec :path => "../"